How do I delete words containing a certain charater in java?
java,regex,string,filereader,symbols
use the regex [^@\s]*@\S* [^@\s]* looks for zero or more chars that are not a '@' or whitespace @ looks for one '@' \s* looks for zero or more chars that are not whitespace so the line of code would be: line = line.replaceAll("[^@\\s]*@\\s*",""); ...
java filereader read at offset
In read(char[] buf, int offset, int length), the offset is offset in the buf array. What you need is to skip offset characters. FileReader fr = new FileReader(path); int offset = 11; fr.skip(11); int c = fr.read(); ...
Read FileReader object line-by-line without loading the whole file into RAM
I've made a LineReader class at the following Gist URL. As I mentioned in a comment, it's unusual to use other line separators than CR, CR/LF and maybe LF. Thus, my code only considers CR and CR/LF as line separators. https://gist.github.com/peteroupc/b79a42fffe07c2a87c28 Example: new LineReader(file).readLines(function(line){ console.log(line); }); ...
Reading file in java on Mac
You are trying to read integers from the file, but the content is not integer, please use String value = in.next(); instead of int value = in.nextInt();
Node.js readFile contents to string results in “??”
javascript,node.js,asynchronous,filereader
It seems you are not the first one with this issue. Basically you just need to do something like the following: fs.readFile(filePath, 'utf8', function (err, fileContents) { // Remove BOM character if there is one at the start of the file. if(fileContents.charCodeAt(0) == 65279) fileContents = fileContents.substr(1); } Here you...
Synchronous Read of Local File using Javascript
javascript,filereader,synchronous
Solved by rewriting the code as follows: var nameslist = document.baseURI.split('.'); nameslist.pop(); nameslist = nameslist.join('.') + ".dat"; console.log("Attempting to read from file: " + nameslist); var reader = new XMLHttpRequest() || new ActiveXObject('MSXML2.XMLHTTP'); reader.open("GET", nameslist); reader.onloadend = main; reader.responseType = "text"; reader.send(); function main() { nameslist = reader.responseText.split('\n'); nameslist =...
Download and View PDF inside android application from Webservice
android,web-services,pdf,bufferedreader,filereader
I am trying to download and open a PDF file inside android application i.e. without using any other application(pdf viewer,etc) installed on phone. Not according to the code in your question. You are specifically attempting to open the PDF file in "other application(pdf viewer,etc) installed on phone". Using the...
Parsing json array to javascript array from file:
The JSON you showed is not valid. "tip: m_tip1.png" should be "tip": "m_tip1.png" (see the missing " symbols). The '+' concatenation isn't valid, it is JS, not JSON. This would be the corrected and a valid JSON based on your example: { "menu_items": [ { "name": "m_div_img1", "icon": "m_img1.jpg", "tip":...
How do I loop through a file, byte by byte, in JavaScript?
javascript,html5,blob,filereader
I'm not sure it is what you wanted but maybe it can help, and anyway I had fun. I tried setting reader and file vars as global : var reader = new FileReader(), step = 4, stop = step, start = 0, file; document.getElementById('files').addEventListener('change', load, true); function load() { var...
I use JavaScript FIleReader read a pic , but I can't get the pic 's infomation .
This really help me . Just write the callback function before you give the path to image.src , like this . image.onload = function(){ // ... }; image.src = path;...
ng-repeat not processing upon FileReader
javascript,angularjs,filereader
The problem is that you are altering the $scope object asynchronously so angular is not aware of the changes that it needs to process. Angular does not constantly "watch" your $scope object. The reason you typically don't have to explicitly use $scope.$apply() is because angular will automatically do this for...
Javascript FileReader: Extracting text
My inclination is to say the onload function is asynchronous. In other words it triggers and only executes the "function(e){}" scope when the loading has ended (hence the name "onloadend"). In the mean time the rest of your program outside the scope of the "function(e){}" will continue to execute while...
Java - Writing and Reading ArrayList to and from .txt file - BufferedWriter
java,bufferedreader,filereader,filewriter,bufferedwriter
The for loop work like this.To read the data back, you could read the whole string example: weapon1,item2,item99 into a String object and then split the String with a delimiter "," using split function of string class and then build the new array.example. String text="weapon1,item2,item99"; String parts[]=text.split(","); for(int i=0;i<parts.length();i++) Inventory.add.parts[i]...
How can I read a text file, search for commas, treat commas as new lines, and export it to a new file using Java?
java,text,bufferedreader,filereader
So the entire file is just one line? If that is the case, all you would have to do is the following: import java.util.Scanner; import java.io.*; public class convertToNewline { public static void main(String[] args) throws IOException { File file = new File("text.txt"); File file2 = new File("textNoCommas.txt"); PrintWriter writer...
Java File Reader not finding appropriate file
java,file,bufferedreader,filereader
Your Levels file probably doesn't want to be in the same package as the class, but rather, in the same directory from where your java program was run. If you're using eclipse, this is probably the project directory....
Interpret binary string as image in Python, generated by Javascript native method
javascript,python,io,flask,filereader
On the browser: // Client Side: var xhr = new XMLHttpRequest(); xhr.open('POST', uploadUrl); xhr.send(base64EncodedItem); On the server (I am using Flask/Python 2.x) # Server Side: import re import uuid # Obtain the base64 string image_string = request.data image_string = re.search(r'base64,(.*)', image_string).group(1) # Generate a file name. # We can assume...
return value calculated from javascript FileReader onload event
javascript,callback,onload,filereader
File reading using File Reader is asynchronous operation. Place your logic inside the onload function of file reader. function doStuff(range, file) { var fr = new FileReader(); fr.onload = function (e) { var out = "stuff happens here"; hash = asmCrypto.SHA256.hex(out); /* Place your logic here */ }; fr.readAsArrayBuffer(file); }...
JAVA - continue after file not found exception
java,exception,bufferedreader,filereader,filenotfoundexception
simply put return; in the finally block
Download Excel file from server and save on client
javascript,excel,blob,filereader
I got it working. I just had to add the following to my XMLHttpRequest object: responseType: 'arraybuffer' But it doesn't work in IE, because IE cannot open data URIs. Not even IE11. Anyway I found a great library called FileSaver.js which handles saving files for all major browsers (including IE10+)...
Loading binary image data to an image fails on Android 4.1 in Cordova Project
android,cordova,sencha-touch,blob,filereader
Ah, finally I got it to work on Android 4.1.1 (ASUS Tablet) with the following code. Another issue was, that saving an arraybuffer response from the xhr could not simply serialized, so I converted the stuff to string. Also I receive the blob taking into account, that on some systems...
FileReader on safari firing to soon
javascript,canvas,safari,filereader
The code assumes the image loading is synchronous, but it's asynchronous and should be assumed so even with data-URIs. If the image hasn't loaded properly its width and height attributes will be 0. You can solve this by adding an onload handler for img, then move the code for detecting...
JS FileReader: Read CSV from Local File & jquery-csv
It's not going to work.You have no permissions to read files with javascript from the browser. The only way to deal with it is to create an input[type=file] tag and add onChange event to it. For example: document.getElementById('fileupload').addEventListener('change', function (e) { var files = e.target.files; //proceed your files here reader.readAsText(files[0]);...
Polyfill for FileReader API
javascript,flash,internet-explorer-9,filereader
Finally I was able to comeup with the solution for IE9 polyfill FileReader API by https://github.com/Aymkdn/FileToDataURI <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script> <script src="https://ajax.googleapis.com/ajax/libs/swfobject/2.2/swfobject.js"></script> <object id="file-object"> </object> <div id="file-result"></div> <script type="text/javascript"> var Flash = { /* Flash.getFileData() is called after the file has...
Syntax error, file reader problems, trouble with setters. Complicated problems
java,syntax,filereader,setter,getter
You have two closing brackets in the while loop below. This is causing the error on line 113 and line 119. Just remove the bracket after depositFile.close();. // read each line while((dLine = depositFile.readLine()) != null) { double userDeposit; userDeposit=Double.parseDouble(dLine); userAccount.setDeposit(userDeposit); } // <--------------- HERE -------------------- depositFile.close();} // <------------ AND...
Get file contents from Ractive on-change event
javascript,filereader,ractivejs
You need to pass the files to the reader, like this: Ractive.on('getHeaders', function(target) { // Check that the file is a file if(target.node.files !== undefined) { var headers = []; target.node.files.forEach(function(file){ var reader = new FileReader(); reader.onload = function(e) { console.log(e); console.log(reader.result); }; reader.readAsDataURL(file); }); } }); ...
Program onlly readin one line, when it's suppose to read whole File
Well, this is because you are only reading one line from the file: scan = new Scanner(new FileReader(new File("files.txt"))); String nextLine = scan.nextLine(); In order to read the entire file you have to call scan.nextLine() until you reach the end of file. To check for end of file you can...
Convert Blob to binary string synchronously
javascript,filereader,synchronous
Here is a hacky-way to get you synchronously from a blob to it's bytes. I'm not sure how well this works for any binary data. function blobToUint8Array(b) { var uri = URL.createObjectURL(b), xhr = new XMLHttpRequest(), i, ui8; xhr.open('GET', uri, false); xhr.send(); URL.revokeObjectURL(uri); ui8 = new Uint8Array(xhr.response.length); for (i =...
Dealing with FileReader and subString
You don't skip over the empty lines. Try this one: String line = ""; String region = "", name = ""; BufferedReader file = new BufferedReader(new FileReader("Stores.txt")); line = file.readLine(); while (line != null) { if (!line.isEmpty()) { region = line.substring(0, 10); name = line.substring(10); System.out.println("" + region + name);...
java reader vs. stream
java,inputstream,bufferedreader,filereader
Readers are to read text data with particular character encoding (UTF-8, ISO etc..) while on the other hand, streams are binary data. They work same but there parent classes are different. in a nutshell, if you have to read binary data and save it somewhere, use stream. If you have...
Drawing an image in its full size in a canvas works only on the second try in Mozilla Firefox
javascript,html,firefox,canvas,filereader
I'd give a try to draw the image on the canvas in the img.onload callback.
Cordova 3.4 FileReader not working (no onloadend)
javascript,ios,cordova,filereader
The File API has been updated. See this post: https://groups.google.com/forum/#!topic/phonegap/GKoTOSqD2kc file.file(function(e) { console.log("called the file func on the file ob"); var reader = new FileReader(); reader.onloadend = function(evt) { app.log('onloadend'); app.log(evt.target.result); }; reader.readAsText(e); }); ...
How to show previews of selected documents
angularjs,file,iframe,filereader,preview
This works (fiddle): var reader = new FileReader(); reader.addEventListener("load", function (event) { var div = document.createElement("div"); div.innerHTML = '<object data="' + reader.result + '" type="'+file.type+'">' + '<embed src="' + reader.result + '" type="'+file.type+'" />' + '</object>'; output.insertBefore(div, null); }); //Read the file reader.readAsDataURL(file); Partial code, see the fiddle for the...
Get file type after sending the file from WebRTC
javascript,download,webrtc,filereader
It is not possible to get the type from the raw data except there is some file type/hint embedded in the data (e.g. ZIP, PDF). You should create you own protocol to send the filename as well. What I did is to use the channel's protocol property to set the...
Java, reading numbers from txt files with special symbols into two dimensional array of integers
java,arrays,java.util.scanner,bufferedreader,filereader
Scanner in many of its methods expects pattern representing regular expressions (regex). This happens also in case of skip method, but in regex | is meta-character representing OR operator. To make it simple literal you need to escape it by adding \ before it (remember that to create \ literal...
java repeat one part of the output
java,eclipse,io,filereader,java-io
You should remove a for loop inside InputHandler class inputData method. Because you read line by line student information. Looping again is wrong. It should be like this private void inputData(String fileName) { try { File file = new File(fileName); FileReader fileReader = new FileReader(file); BufferedReader bufferedReader = new BufferedReader(fileReader);...
Generate An MD5 Hash of An Image Using HTML5 / JavaScript
javascript,html5,hash,md5,filereader
This goes there: var reader = new FileReader(); reader.onload = function(e) { var contents = e.target.result; // This goes here: var hash = CryptoJS.MD5(CryptoJS.enc.Latin1.parse(contents)); }; Be sure you include the CryptoJS library: <script src="http://crypto-js.googlecode.com/svn/tags/3.1.2/build/rollups/md5.js"></script> ...
getting two consicutive value from file in java
java,file,csv,stream,filereader
I solved the issue by using a BufferedReader instead of the scanner to read the datas. Since your code is trying to read the whole line via the scanner and then split it, you can do that in a much easier way using a BufferedReaderand calling its readLine()method. So the...
Can the ouput of a HTML5 FileReader.readAsDataURL be used to reference fonts?
javascript,html5,fonts,filereader
Short answer: yes. Longer answer: yes, but you want to re-serve it with the real mime type, not "octet stream" mime type. It'll probably still work, but the browser will complain that the resource had the wrong mime type, and if the site you serve it on uses CSP (which...
Reading .ini File When Converted into Runnable Jar File
java,bufferedreader,filereader,ini,ini4j
When you want to load the config from the jar, you can use the path getResource() and getResourceAsStream() functions. The NullPointerException indicates (most likely, because it is always hard to tell with many statements on one line) that the resource was not found (which silently returns null) If you want...
Java: BufferedReader Keeps Writing Values 128-159 as 63 When Converting to Char
java,bufferedreader,filereader,filewriter,bufferedwriter
When you use FileReader and FileWriter, they will use the default encoding for your platform. That's almost always a bad idea. In your case, it seems that that encoding doesn't support U+0092, which is fairly reasonable given that it's a private use character - many encodings won't support that. I...
HTML5 File Reader failed to add multiple files and only adding one file from the list
The problem was asynchronous code execution in javascript. Here is the answer- Asynchronous execution in javascript any solution to control execution?
How to read files in java?
Here is a perfect example you should be able to base yours off of. This is reading lines of a file one by one. if you want them all together you can add them one by one to an array of strings or however you'd like. FileReader will read a...
AngularJS Problems with FileReader and $scope.$watch?
javascript,angularjs,filereader
Watch never seems to notice because you are updating the scope outside of angular context. You would need to manually invoke digest cycle using scope.$apply() or any other way like using a $timeout etc inside onload async function. and better move the watch outside of the onFileSelect method otherwise you...
Write Object to File “Persons.obj”
java,file,bufferedreader,filereader,printwriter
For simply writing a small number of strings to a file, I'd recommend using the class "PrintWriter". It wraps itself around a standard Writer and allows you to write any primitive data type and some Objects to a given "Writer" (In our case a FileWriter). This isn't the only way...
Came across this code & I'm wondering why this static helper method is needed?
java,file-io,filereader,helpermethods
You are correct. Although I would say that it's so the method can be called on the Class rather than on an object, or instance, of the class. For example, static methods can be called like this: TextFileReader.readFile(<filepath>); without having to first create an instance of the class. ...
Files reading: Out of memory error
You are running out of memory. HashMap<Integer,V> is a rather bad choice. It needs 16 bytes for the key, and probably 24 byte for the entry each + dead space. Your double[] then needs 32 bytes (for storing 16 bytes of payload). In the array list, you need another 4...
Program Reading Last Line of File Twice [duplicate]
while(!feof(textFile)) is wrong, you end up "eating" the end of file. You should do while(fgets(buffer, MAX_LINELENGTH, textFile)) { // process the line } Related: Why is iostream::eof inside a loop condition considered wrong?...
Zipping and uploading files using PhoneGap and JSZip
cordova,promise,filereader,jszip,ramda.js
The FileReader API is asynchronous : when you create your writer, the reader can be still waiting (and the zip file still empty). Promises are the right pattern here, just be sure to resolve the promise after adding the file to zip : var promises = R.map(function (entry) { //...
store double variable values in to list [closed]
java,file,csv,filereader,opencsv
If you want to save the balances values in a list of Strings, you can directly add them to it, like this: List<String> balancesList = new ArrayList<String>(); And in your while loop: String data = inputStream.next(); String[] values = data.split(";"); balancesList.add(values[2]); //Just add it to the list here Because the...
FileReader onload with result and parameter
Try wrapping your onload function in another function. Here the closure gives you access to each file being processed in turn via the variable f: function openFiles(evt){ var files = evt.target.files; for (var i = 0, len = files.length; i < len; i++) { var file = files[i]; var reader...
Alter file contents before uploading
javascript,html5,filereader,fine-uploader,fileapi
How about returning false to reject the file from onSubmit, encrypt it, then re-submit the encrypted version via the addBlobs API method. For example: callbacks: { onSubmit: function(id) { if (!fileOrBlob.blob || !fileOrBlob.blob.encrypted) { var fileOrBlob = uploader.getFile(id), reader = new FileReader(); reader.onload = function (e) { //encrypt here encryptedBlob.encrypted...
filereader result order changing while uploading multiple images in javascript
javascript,jquery,javascript-events,filereader
readAsDataURL is asynchronous so you can't guarantee that they will finish in any order. Just pass the index of the file to your IIFE with your file reader.onload = (function(theFile, count) { return function(e) { if (count > 5) { alert("You can upload only 5 images."); } else{ $('#Image'+count).prop("src",e.target.result); }...
javascript convert to utf8 the result of readAsBinaryString
I found the answer on http://snipplr.com/view/31206/: I have tested it on French characters and it converts then to utf8 without any issues. function readUTF8String(bytes) { var ix = 0; if (bytes.slice(0, 3) == "\xEF\xBB\xBF") { ix = 3; } var string = ""; for (; ix < bytes.length; ix++) {...
How to open a local file with Javascript FileReader()
javascript,filereader,local-files
Browsers don't give such ability because of security restrictions. You're not allowed to read local files, untill user won't select specific file in file selection dialog (or won't do this with drag-n-drop). That's why all code examples use file selection dialog. More details Does HTML5 allow you to interact with...
How to AJAX POST file contents together with other data to ASP.NET Web API
asp.net,ajax,asp.net-web-api,filereader
We ended up base64 encoding the file and sending it as part of the JSON then parsing it on the server into a byte array. One should be careful when allowing upload of large files but for small files it seems to be fine.
Cannot extract local video file duration in mobile browser
javascript,mobile,html5-video,blob,filereader
Solved this by using FFMPEG's FFprobe service. We download just a small amount of the video - about 4k is enough - and then read the metadata. For quicktime, however, the metadata is at the end of the video, so you have to swap the beginning for the end. This...
Understanding how BufferedReader works in Java
java,bufferedreader,filereader
Your understanding of how this block should work: The while loop goes through each line of text until the condition is no longer true Correct :-) . Each line is stored in the BufferedReader Not correct. The bufferedReader does not store any data, it just reads it (Thats why it's...
FlatFileParseException Spring batch
I guess you have hidden characters in your file. You can follow this link instructions to verify if and which characters you have in your file. This question can help you \001 delimiter issues regarding choosing right value for delimiter. As suggested you can try to pass "\u0001" instead ^A....
JavaScript readAsDataurl is not a function
As it turns out someone at Mozilla created the deprecated method readAsDataurl with the improper letter casing and since JavaScript is case sensitive I simply had to use the readAsDataURL method (uppercase URL): if (fr.readAsDataURL) {fr.readAsDataURL(files[i]);} else if (fr.readAsDataurl) {fr.readAsDataurl(files[i]);} ...
My file reader program, needs to print in columns, printing in one long line?
You're just printing the frequency map as is, instead you'll have to walk over the map and construct those three columns, you'll have to replace System.out.println(freqMap); with e.g.: for(final Map.Entry<String,Integer> entry : freqMap.entrySet()) { final String key = entry.getKey(); final Integer value = entry.getValue(); final float percentage = /* calculate...
How to read .txt or .doc file in codeigniter?
First off edit your project index.php and set the environment to development so that errors are properly displayed. You do have an error its just suppressed with this change it will show you your errors. First one I can spot myself I think - the php function is actually readfile()...
How to copy content of a file to another file but at the top of the file in Java [duplicate]
java,file,filereader,fileinputstream,filewriter
Here a snippet which will do the job as you described Charset usedCharset = Charset.defaultCharset(); // read all lines from Convert.sql into a list List<String> allLines = Files.readAllLines(Paths.get("Convert.sql"), usedCharset); // append all lines from Entity.sql to the list allLines.addAll(Files.readAllLines(Paths.get("Entity.sql"), usedCharset)); // write all lines from the list to file Entity.sql...
JavaFX FileRader read lines gui show counter
java,javafx,counter,filereader,freeze
See the question and my answer here: Display progress bar while compressing video file JavaFX is a single thread GUI toolkit and if you do a long running task on the GUI Thread, it will freeze. So you should move the file reading to a background task as described in...
how to read and load a file with these characters in java?
You should replace this: calTemporal.add(Calendar.YEAR, Integer.parseInt(temp[4])); calTemporal.add(Calendar.MONTH, Integer.parseInt(temp[5])); calTemporal.add(Calendar.DAY_OF_WEEK, Integer.parseInt(temp[6])); --- to this --- String[] temp2 = temp[4].split("/"); calTemporal.add(Calendar.YEAR, Integer.parseInt(temp2[0])); calTemporal.add(Calendar.MONTH, Integer.parseInt(temp2[1])); calTemporal.add(Calendar.DAY_OF_WEEK, Integer.parseInt(temp2[2])); ...
Loading CSV with FileReader to make JS Objects for Map Markers (Maps API)
javascript,google-maps,csv,google-maps-api-3,filereader
Your posted code does not contain all the issues. I commented out the if (file.type.match(textType)) { test, that was giving me an error: "File not supported!" fiddle the csvParse function doesn't correctly parse the last entry of the file, you are getting NaN for the longitude (so the google.maps.LatLngs are...
Add promise result to items in array
javascript,asynchronous,filereader
This is a common problem: JavaScript closure inside loops – simple practical example. You can solve it by binding the index to the callback: data[last].then(function(index, result){ data[index].src = result; }.bind(null, last)); ...
Again: how can I read a file using javascrpt
This code did the trick: var objXMLhttp = new XMLHttpRequest() objXMLhttp.open("GET",strFileName,true); objXMLhttp.send(); and, in addition, an objXMLhttp.onreadystatechange=function() ... event handler must be implemented, which is the code acutally receiving the data, like so: objXMLhttp.onreadystatechange=function() { if (objXMLhttp.readyState==4 && objXMLhttp.status==200) { var arrContents = objXMLhttp.responseText.split("\n"); // gotcha! .... } } ...
Get informations about files in folder
c#,file,folder,streamreader,filereader
Try something like this: var listOfFiles = new List<String>(); string [] fileEntries = Directory.GetFiles(targetDirectory); foreach(string fileName in fileEntries) { lisOfFiles.Add(fileName); } for more info look here : http://msdn.microsoft.com/en-us/library/07wt70x2(v=vs.110).aspx...
Read a .txt file and return a list of words with their frequency in the file
Do something like this. I'm assuming only comma or period could occur in the file. Else you'll have to remove other punctuation characters as well. I'm using a TreeMap so the words in the map will be stored their natural alphabetical order public static TreeMap<String, Integer> generateFrequencyList() throws IOException {...
Trying to read a data.txt file and do calculations
java,bufferedreader,filereader
I was able to find that bug very easily, when you get NullPointerException always try to print it out in the console before doing something to it, just to make sure. I've just added System.out.println(line) before Integer.parseInt(), remember to do this and it will make your life much much easier...
Java reading a string from a text(txt) file
java,string,bufferedreader,filereader
You're breaking the loop if the name exists, so you should only print the "not exists" message if the loop doesn't break: Scanner in = new Scanner(System.in); out.print("Enter name: "); String name = in.nextLine(); BufferedReader br = new BufferedReader(new FileReader("name.txt")); String line; boolean nameFound = false; while ((line = br.readLine())...
unable to append div with multiple images with for loop
You're creating one reader and using it over and over. Try creating a new one each iteration: $('#imagess').change(function() { var leng=this.files.length; for(i=0; i<leng;i++) { var reader=new FileReader(); reader.onload=function(e) { //alert('<img src='+e.target.result+'/>'); $('#blah').append('<img src='+e.target.result+' width=60 height=60 />'); //$('#blah').attr('src', e.target.result); } reader.readAsDataURL(this.files[i]); } }); ...
How can I read a file and randomly pull information from it and add it to an array list? [closed]
java,sorting,random,arraylist,filereader
Read the file sequentially - thats the easiest route. Then randomly shuffle the collection. Actually, another question. Could you use math.random() to look at the lines of the text file and if, lets say, the line 5 comes up then you remove it from the parameters you set for math.random()?...
java hadoop: FileReader VS InputStreamReader
java,hadoop,bufferedreader,filereader,inputstreamreader
i have found the problem. i have get a checksum exception. now i delete all .crc files from my input file. in this way i get no checksum exception and the buffered reader work fine (uncommented code part, upstairs).
Read text from file and correct it (commas and dots)[Java]
Let's first assume you can use regex. Here is a simple way to do what you want: import java.io.*; class CorrectFile { public static void main(String[] args) { FileReader fr = null; String line = ""; String result=""; // open the file try { fr = new FileReader("file.txt"); } catch...
No data being passed through FileReader in Javascript
FileReader is asynchronous, therefore you have to set up a callback that will be invoked once the data has been read. Also readAsDataURL is not appropriate here, you want readAsText. fileRead.onload = function() { document.getElementById('out').appendChild(document.createTextNode(' ' + fileRead.result)); } fileRead.readAsText(data); ...
Python: Fastest way to process large file
python,file,python-2.7,filereader
It sounds like your code is I/O bound. This means that multiprocessing isn't going to help—if you spend 90% of your time reading from disk, having an extra 7 processes waiting on the next read isn't going to help anything. And, while using a CSV reading module (whether the stdlib's...
HTML5 file upload script not loading file
So you're setting the reader.onload event to a function, but you need to call the reader.readAsText() function outside of this. So for example change your code to: reader.onload = function(event) { console.log(event); }; reader.readAsText(file); What this does is to tell the reader that when you call reader.readAsText(file) it should run...
FileReader JS throws The object is busy reading a blobs
You need to wait for the reader to finish reading, filereader is async so you can't do that in the for. Haven't tried it, but here is how to do it: function readFiles() { if (changeEvent.target.files.length > 0) { // if we still have files left var file = changeEvent.target.files.shift();...
How can i move rotated canvas image whitout disorientation?
javascript,jquery,canvas,html5-canvas,filereader
Reset the transformations after drawing. The mouse events are transformed as well when applied to the canvas context so using transforms only when drawing can solve this. However, this also require the code to use absolute values, for example: function draw(){ var im_width = parseInt( imageObj.width + resizeAmount, 10 );...
FileReader not reading file properly
I needed to set a callback for when the reader finishes reading the file, as this is done asynchronously. function(file) { console.log(file) var reader = new FileReader(); reader.onload = function() { console.log(reader.readyState); console.log(reader.result); } reader.readAsText(file); } ...
File Reader Method
java,logic,bufferedreader,filereader
If you want to read the entire file twice, you will have to close it and open new streams/readers next time. Those streams/readers should be local to the method, not members, and certainly not static. ...
Should BufferedReaders be passed a dynamic FileReader?
java,performance,bufferedreader,filereader,java-io
No, it's not necessary. buffReader.close() will close the FileReader as well. For some reason, this doesn't seem to be mentioned in the Javadoc. However, if you look at the source code for BufferedReader, you'll find close is defined as: public void close() throws IOException { synchronized (lock) { if (in...
How do I filter results in .txt file
According to the documentation System.getProperty() uses different keywords. String userHomeFolder = System.getProperty("user.home"); String userDesktop = userHomeFolder + "/Desktop"; File file = new File(userDesktop, "test.txt"); ...
How parse string into map,the string read from a file location using java
java,dictionary,hashmap,bufferedreader,filereader
The space characters around the number caused a NumberFormatException, and there are space characters around city names so change this line amap.put(pair[i], Integer.parseInt(pair[1 + i])); to this amap.put(pair[i].trim(), Integer.parseInt(pair[1 + i].trim())); It's a really bad practice to leave catch blocks empty, it hides the problem (the NumberFormatException in this case)....
Working with promises jQuery
javascript,jquery,arrays,promise,filereader
I need to do a promises that returns my value to store it Promises don't return values, they "contain" them - a promise is a wrapper that represents an asynchronous value, a pointer to the future. but I don't understand how promise works You definitely should go for that...
How to browse local files from Django and store the file information
javascript,jquery,django,file-upload,filereader
The only interface to local files available in a web browser is the File-picker, as if to select a file for upload. But, you don't have to upload the files! You can work with them in Javascript instead. See for example's Mozilla's documentation on "Using files from web applications". Note...
writing and reading file with date in the name
java,file,file-io,io,filereader
You are calling new Date() which will give the time when it is called - different for writing and reading. Instead call Date date = new Date() and use this date at both the places...
Closure Compiler warning for FileReader and Blob - cannot fix it
javascript,filereader,google-closure-compiler
Closure Compiler unfortunately assumes all object types are nullable unless you tell it otherwise using an ! /** @param{!Blob} a_blob */ function test(a_blob){ ...
Adding numbers to ArrayList with FileReader
You can't modify the caller's List reference. If you must new the List, return it public List<Integer> read() throws IOException{ File file = new File(n); Scanner in = new Scanner(file); List<Integer> list = new ArrayList<Integer>(); while(in.hasNextLine()){ String line = in.nextLine(); Scanner scan = new Scanner(line); while(scan.hasNextInt()){ list.add(scan.nextInt()); } scan.close(); }...
Read streamfile in java
java,file,csv,filestream,filereader
There were some problem in your code in terms of generating exception and readability. I rewrote your code and it is working : package rotation.pkg45; import java.io.BufferedWriter; import java.io.File; import java.io.FileNotFoundException; import java.io.FileWriter; import java.io.IOException; import java.util.Scanner; import java.util.logging.Level; import java.util.logging.Logger; public class Rotation45 { public static void main(String[] args)...
Java FileReader: How to assign every line in the text file to a variable
I would suggest you create a List and store every line in a list like below: String str; List<String> fileText = ....; while ((str = br.readLine()) != null) { fileText.add(str); } ...